Definitions:

1. Refers to a ruling body or group composed of four individuals who jointly hold power or authority. NOUN
   • The quadrumvirate of leaders collectively governed the city-state during times of crisis.
2. Refers to any collective group of four individuals who share equal or shared power in political, business, or other leadership contexts. NOUN
   • The company's major decisions were made by a quadrumvirate of its four founding members.
3. Term historically associated with political regimes or alliances, where four key figures worked together to govern or manage. NOUN
   • In ancient Rome, the alliance between the four generals was referred to as a quadrumvirate.

Synonyms:

• four